Passed default values to display routine so that they only have to be defined once. Changed the way that command-line options are processed so that defaults are overwritten by command-line (also gives more compact and readable code).
Passed default values to display routine so that they only have to be defined once. Changed the way that command-line options are processed so that defaults are overwritten by command-line (also gives more compact and readable code).

ctraabe/TextureGenerator